Locomotive underframe



Jan.

1927. w. M. SHEEHAN LOCOMOTIVE UNDERFRAIB 2 Sheets-Sheet 1 Filed April9. 1926 Inventor M//7//'0/I7. M Shea/m0 Jan. 1

927 w. M. SHEEHAN LOCOMOTIVE UNDERFRAME Filed April 9. 1926 2Sheets-Sheet 2 Ill/fl! M/ rf Ill/l A 17 film! In ven a! or MY/io/WM6/7e6/700 Q I l L Patented Jan. 18, 1927.

UNITED STATES I 1,614,695 PATENT OFFICE.

WILLIAM M. SHEEHAN, OF ST. LOUIS, MISSOURI, ASSIGNOR TO COMMONWEALTHSTEEL COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF NEW JERSEY.

LOCOMOTIVE UNDERFRAME.

Application filed April 9,

My invention relates to railway rolling stock and consists in animproved underframe, particularly adapted for use on 10- comotiveshaving electric motors mounted on the trucks thereof.

One of the objects of my invention is to more effectively utilize theunderframe to form conduits for the flow of air from blowers carried bythe locomotive to the motors mounted on the locomotive trucks.

Another object of my invention is to adapt the underframe to formballast compartments.

Both of the above objects are obtained by utilizing the space betweenthe upper and lower faces of the underframe sill members, therebyavoiding the demand for space above the underframe for the purposesmentioned and also providing a lower center of gravity for thelocomotive.

Another object of my invention is to construct an underframe for thepurpose referred to of a one-piece casting and to adapt the casting soas to facilitate the flow of air therethrough and the carrying ofballast thereon.

Another object of my invention is to provide steps, lifting hookrecesses, push pole pocket brackets, improved truck safety chain lugs,and suitable brackets and pads for mounting blowers, compressors, andother apparatus on the underframe, all these parts being formedintegrally with the un- ,derframe.

In the accompanying drawings illustrating a selected embodiment of myinvention, I

Figure 1 is a top view of one-half of an under-frame embodying myinvention.

Figure. 2 is a side elevation of the same.

Figure 3 is a longitudinal verticalsection taken on. line 33 of Figure1.

Figure 4: is a transverse vertical section taken on line 4-4 of Figure1.

Figure 5 is a transverse vertical section taken on line 55 of Figure 1.

Figure 6 is a detail horizontal section taken on line 6-6 of Figure 2.

Figure 7 is adet ail vertical section taken on line 7-7 of Figure 1. ,Q

Figure 8 is a section online 88 of Figure 4.

The underframe includes center sills 1 which are flanged top and bottomand the inner flanges of one sill are joined as at 7 1926. Serial No.100,840.

to the inner flanges of the other sill throughout most of their length,forming a substantially box-shaped girder between the bolsters. Sidesills 2 and intermediate sills 3 also extend lengthwise of theunderframe and the transverse members comprise the bolsters formed ofspaced elements 4 and 5, suitable transoms 6, and end sills 8.

The above members are provided with projections 31 having suitable padsfor mounting the motor compressor, and similar projections 32 areprovided for mounting the motor blower.

The webs of the center sills and the ties and portions of the top andbottom flanges of the same form sides and portions of the horizontalwalls of an air passage or conduit extending between the bolsters, whichconduit is completed by the addition of plates 9 and 10 which aresecured, respectively, to the top and bottom of flanges of the centersills. The transverse edges of each portion 7 are beveled as, indicatedat 11 to reduce the resistance offered by the member to the passage ofair therethrough.

The inner bolster element 5 and the adjacent members 7 are reinforced bya longitudinal vertical rib 13 which is located centrally of the airconduit and has its edge opposed to the direction of flow of air so asto ofler the least resistance to the passage of air past the same.

Air is admitted to the conduit at the rectangular opening 12 adjacentthe righthand bolster illustrated, and air is discharged from theconduit to the truck structure through the center plate structure ateach bolster as best indicated in Figure 4:, or

. through opening 37 as best indicated in Fig;

ure 3. Either discharge opening may used according to the truckstructure desired, the opening not used being closed by a suitable coverplate as indicated at P by broken lines. The air may be supplied to theconduit through opening 12 in any well-known man- .ner and is ledfromthe discharge opening to the motors by any additional conduit articularforms thereof being illustrate in my copending applications SerialNumbers 114,742 and114,743, filed June 9, 1926.

The center plate 14 has an annular form providing a central openingthrough which air can pass and is adapted to fit into a similar annulartruck center plate 33, the latter material may be placed without takingany flange and projecting an outwardly extendroom above the uppersurface of. the frame. If desired, these ballast compartments may becovered with plates 17.

By offsetting the web of the side sillinwardly as indicated at 18 Iprovide for a step. This step is completed by extending "the web of theside sill" downwardly a short distance below its inwardly extendinglower flange 19 on this downward extension.

in (S ee Fig. 7). Flange 19 may be roughened to provide a securefoot-hold and its outer edge may have a lip 20 to guard the foot of theuser against being inserted beneath the step. The outwardly extendingupper flange isv cut away at the offset portion of the sill as indicatedat 21 to provide sufficient clearance in using the step.

' The web of each side sill preferably has diverging lowenportions 22and 23 at the bolster which form recesses adapted to re-.

ceive a lifting cable or hook O or similar devlce. I reinforce the outerportion 23 of the web by suitable ribs 24. The edges of the web whichare engaged by the cable are y rounded to prevent injury to the latter.

At 25 I show the side sill depressed to rovide a space for the integralsafety chain ug 26, the depressin of the side sill web enabling me toprovi e the lug without projecting the same beyond the outer edge of theside sill upper flange. This depression is made of sufiicient length topermit easy application and removalof a safety chain pin or bolt, andthe lug is located nearer to one end of the recess than to theother.,-:thereby insuring that a workman can only insert the bolt fromone direction which may be desirable in order to cation of the chain.

At the end of the side sill and end sill the corner of 'the underframeis formed by a downward extension-27 which provides space for a pushpole pocket 28 facing diagonallyoutward from the end of the frame. Atthe center of the end sill the same has an integral downward extension29 connected to a similar downward extension 30 on the ends of thecenter sills, the last described structure bracing this portion oftheend sill to absorb the bufling stresses. 5

With, my structure as hereinbefore described, a number of parts whichhavehithproduce proper applierto been eliminated or provided by theaddition of separate elements to the underframe are formed integrallywith the reformed on the side sill are added thereto without extendingbeyond clearance lines and the parts formed in the body of the frame,such as the air conduit and ballast compartment, are enclosed andprotected by the main members of the underframe.

7 Many of the details of my structure may be modified without departingfrom the spirit of my invention, and I contemplate the exclusive use ofsuch changes and arrangement in structure as fall within the scope ofthe appended-claims.

I claim:

1. In an electric locomotive underframe, spaced flanged sills forming anair conduit between their webs and flanges and extending longitudinallyof the frame.

2. In an underframe for electric locomotives, transversely spacedlongitudinal sills, bolsters, and a passage between said sills frombolster to bolster, for air to cool the locomotive motors.

3. Inan underframe for electric locomotives, transversely spacedlongitudinal sills, said sills forming the sides of a conduit for a-Inotor cooling air current.

, 4. In an underfram'e for electric locomo= tives, an integrallongitudinal member of box section, the interior of which forms aconduit for distributing an air current.

5. In anunderframe for electric locomotives, longitudinal'sills,vertically spaced horizontal flanges on said sills for attaching top andbottom walls of an air conduit leading to the locomotive motors, andtransverse portions connecting said flanges and having edges beveled toreduce resistance to the passage of .air through said conduit.

, 6. In a cast underframe for electric locomotives, s'paced sills, andsill connectmg ties formed integrally therewith, and I having thesame. Ip, p

7. In an electric locomotive underframe,

inc

their inner surfaces beveled outwardly to .reduce resistance to thepassage of air past spaced sills, and a bolster formed of spacedelements, there being an air conduit, extend .ing longitudinally of theframe between said sills and transversely of the sills between saidbolster elements.

8. In an electric locomotive underframe,

spaced center sills, bolsters, a passage between said center sills frombolster to bolster for air tofcool the locomotive motors, center plateson said bolsters, an inlet to said passage between said bolsters, andoutlets from said passage through said center'plates.

9. In an electric locomotive underframe, spaced sills extendinglongitudinally of the frame and having imperforate vertical webs.

bolsters, a center plate on each of said bol sters, each of saidbolsters including vertical webs surrounding three sides of its centerplate and forming witlr said sills a continuous air conduit leading fromapoint intermediate said bolsters through said center plates to thelocomotive truck.

10. In combination, a locomotive underframe including a bolster, acenter plate thereon, there being an air conduit from the underframethrough the side of said bolster and through said center plate to thelocomotive truck.

11. In an underframe, a side sill, and an intermediate sill having lowerflanges extending toward each other. said sills forming side and bottomwall portions of a ballast compartment.

12. In an underframe. a side sill, Z-shaped in cross section. with itslower flange extending inwardly and its upper flange extendingoutwardly, and an intermediate sill similarly spaced but with itsrespective flanges extending oppositely to said side sill flanges, aplate resting on the lower flanges of said sills and with the webs ofsaid sills forming a ballast compartment.

13. A cast underframe including Z-shaped side and intermediatesills'with their lower flanges facing each other, said sills beingadapted to support and retain a plate between them to provide a ballastreceptacle near the side of the underframe.

14:. In a one-piece cast railway underframe, spaced center sills, andspaced side 7 and intermediate sills on each side of said form an airconduit, and said side and intermediate sills cooperating to formballast compartments, said conduit and compartments being locatedbetween the top .and bottom surfaces of said underframe.

15. In an electric locomotive underframe, a bolster, the middle portionof which forms part of an air conduit, the inner and lower walls of saidbolster having openings to provide for the passage of air from thecenter of the underframe through said bolster to a truck.

16. In an electric locomotive underframe, spaced center sills. bolsterseach comprising spaced vertical walls intersecting said center sills,said sills and bolster walls forming portions of air conduits leadingfrom the intermediate part of the locomotive underframe to thelocomotive truck. Q

' 17 In a locomotive underframe. a side sill having a lateral depressionformed therein,

and a step at the bottom of said depression.

18.v In a locomotive underframe, a-Z-shaped side sill having its weboffset rearwardly for a portion of its length and there ex tendeddownwardly and having an outwardly extending lower flange thereon toprovide a step.

19. In a cast underframe, a side sill Z- shape in cross section with itsupper flange facing outwardly, said sill having a portion offsetinwardly and downwardly with an outwardly extending lower flange, saidoffset and flange forming a step enclo:ed at its ends and located belowthe level of the remainder of the sill.

20. In a locomotive underframe, a side sill including a vertical web. aportion of which has integral downwardly diverging flanges forming arecess for engaging a lifting hook.

21. In an underframe casting, a side sill, a portion of which is bulgedoutwardly and is provided with integral reinforcing ribs on its outerside and i". provided with a corresponding inwardly extending integralelement adjacent said bulge, said portion and elements forming adownwardly facing pocket for lifting hooks.

22. In an'nnderframe. a side sill having a vertical web depressedinwardly throughout a portion of its length, and a transverselvextending lug on the outer face of said depressed portions for attachingsafety chains or the like.

'23. In an electric locomotive underframe,

,spaced sills and spaced upper and lower walls forming an air conduit,and a vertical reinforcing member bet-ween said walls having its edgerounded toreduce resistance to air passed through said conduit.

24-. In an electric locomotive underframe, a bolster having upper andlower walls, an air conduit leading to the interior of said bolster. avertical rib located in said conduit and connecting and reinforcing saidwalls, and having its edge rounded to reduce resistance to the passageof air by the same.

25. In an underframe, a side sill having a restricted portion depressedinwardly, a safety chain lug extending transversely of said portion andlocated nearer to one end of said portion than to the other end thereof.

26. In a locomotive underframe, a side sill having an integral portionrovided with a downwardlv facing recess a apted to receive a liftingelement, the outer edges of said recess being rounded to avoid injury tosuch an element.

27. In a locomotive underframe, a side sill, an outwardly and downwardlyprojectingflange of restricted length integral with said sill beneathand around the ends of which flange a lifting cable or like element maybe passed.

28. In an underframe for electric locomotives, a longitudinal draftmember of I section between said sills, the interior of a continuous airconduit leading from a which forms a conduit for distributing an aircurrent, transversely disposed elements connecting said SlllS andmember, said transverse elements having flanges connected to the top andbottom walls of said member.

31. In an underframe for electric locomotives, a longitudinal draftmember of box cross section, and a bolster of box cross section, theinterior of said member and of said bolster forming. a conduit fordistributing an aircurrent.

32. In an underframe for electric locomotives, spaced bolsters, alongitudinal draft member of'box cross section, the interior of whichbetween said bolsters forms a conduit for distributing an air current,center plates on said bolsters, an inlet to said conduit between saidbolsters, and outlets from said conduit through said center plates.

33. In an underframe for electric locomotives, bolsters, a longitudinalmember of box cross section, a center plate on each of said bolsters,each of said bolsters including vertical webs surrounding three sides ofits center plate and forming with said member point intermediate saidbolsters through said center plates to the locomotive truck. 34. In anunderframe for electric locomotives, a longitudinal member of box crosssection, a bolster including spaced vertical Walls intermediate saidmember, said member and bolster walls forming portions of an air conduitleading from the intermediate part of the locomotive underframe to thelocomotive truck.

35. In an electric locomotive underframe, a longitudinal member of boxcross section, the interior of which forms,an air conduit and a verticalreinforcing element extending longitudinally of the underframe andspaced between the vertical walls of said longitudi nal member, the edgeof said element being rounded to reduce resistance to air passed throughsaid conduit.

36. In'a one-piece cast underframe for electric locomotives, alongitudinal draft member of box cross section, the interior of whichforms a conduit for distributing an air current. v

37. In a locomotive underframe, a side sill presenting a flush exteriorvertical face throughout the major portion of its length, and a' stepelement of restricted length extending downwardly and outwardly fromsaid sill and formed integrally therewith.

38. In a locomotive underframe, a side sill presenting a flush exteriorvertical face throughout the major portion ofits length but having ashort olfset section, and a step element adjacent said section extendingdownwardly and outwardly from said sill and formed integrally therewithand having its end and inner edge enclosed.

39. In a locomotive underframe, a Z- shaped side sill having a portionof its web extending downwardly beyond the lower flange of the Z andprovided with an outwardly extending flange thereon to provide a step. I

In testimony whereof I hereunto afiix my signature this 16th day ofFebruary, 1926.

WILLIAM M. SHEEHAN.

